Question
HLPaper 1A
Light is incident on a diffraction grating. The wavelength lines and are just resolved in the second order spectrum. How many slits of the diffraction grating are illuminated?
A
20
B
40
C
200
D
400
Light is incident on a diffraction grating. The wavelength lines and are just resolved in the second order spectrum. How many slits of the diffraction grating are illuminated?
20
40
200
400
Want more practice questions for Physics?